Troubleshooting - Tait T809-10 Service Manual

MBZ-00001-01
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Troubleshooting

The following is a list of possible power supply fault symptoms and possible causes.
Symptoms
1 • ON LED does not
light up
• No output voltage
2 • Output voltage
below specification
• ON LED lights up
but the intensity is
low
3 • Power supply over-
heats
Copyright © 2004 Tait Electronics Ltd
Possible Causes
Equipment has over-
heated and thermal cut-
out has operated
Defective switching cir-
cuitry
Mains supply is too low
Current overload protec-
tion is active
Defective switching cir-
cuitry
Mains supply is too low
Equipment cooling is
inefficient due to incorrect
installation of the T809-10
The T809-10 internal fan
has failed
Troubleshooting
Suggested Solutions
See solutions for Symptom
3 below
Replace module & return
faulty module for servi-
cing
Check and correct mains
supply problem
Check for possible causes,
that is, short-circuits
Replace module or return
faulty module for servi-
cing
Check and correct mains
supply problem
For installation guide-
lines, refer to Section 3.9
Replace module or return
faulty module for servi-
cing
November 2004
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